CVE•Published 2026-05-04•Modified 2026-05-29•1 article on news•5 live references•NVD data

CVE-2026-29199Phpbb · Phpbb

Vulnerability data via NVD (ingested)

CVSS v3.1

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS percentile

Exploit Prediction Scoring System · top 92% of all CVEs

Weaknesses (CWE)

CWE-640Weak Password Recovery Mechanism for Forgotten Password

Description

phpBB before 3.3.16 is vulnerable to Host Header Injection that can lead to password rest link poisoning. When force_server_vars is disabled, the servers hostname may be extracted from the HTTP Host header which is used to generate the password reset link URL. An attacker who can manipulate the Host header (e.g. through misconfigured host setup or missing header validation by the webserver) can cause password reset emails to contain a link pointing to an attacker-controlled domain, potentially leading to account takeover.

Timeline

Published 2026-05-04

Modified 2026-05-29

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-29199

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Phpbb Phpbb"

All exposed Phpbb Phpbb instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Phpbb"

HTTP body or banner mentions "Phpbb" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-29199